OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

6.73°S, 35.69°WAmerica/Sao_Paulo

Daylight+13.5°

16:17:18

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 20m of true darkness · 11h 42m total night

DaylightCivil (−6°)Nautical (−12°)Astro (−18°)Dark Sky (<−18°)

TRUE DARK SKY WINDOW

Sunset17:16

Civil Dusk17:37

Nautical18:02

Full Dark18:27

Nadir23:06

Dark Ends03:46

Nautical04:11

Civil Dawn04:36

Sunrise04:57

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE15.9°

DISTANCE379,686 km

Moonrise15:07

Moonset03:25

HorizonAbove

LUNAR INTERFERENCE INDEX26% · Moderate Lunar Glow

Milky Way contrast is softened. Bright open clusters and double stars are optimal.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

33/100

Challenging Stargazing

High cloud cover or severe light interference. Recommend bright planetary observation or indoor planning.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to America/Sao_Paulo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Visible Low	-4.3	12.2°	253°	Libra	04:51	11:00	17:10	Naked Eye
Jupiter♃	Below Horizon	-2.0	-49.7°	284°	Leo	01:00	06:58	12:53	Naked Eye
Saturn♄	Rising / Setting	0.3	5.7°	88°	Pisces	15:52	21:53	03:53	Naked Eye
Mars♂	Below Horizon	1.0	-57.2°	293°	Cancer	00:28	06:23	12:17	Naked Eye
Mercury☿	Optimal Visibility	0.4	32.1°	249°	Libra	06:13	12:25	18:37	Binoculars
Uranus♅	Below Horizon	5.6	-45.9°	67°	Taurus	19:33	01:24	07:19	Binoculars
Neptune♆	Visible Low	7.8	13.2°	89°	Pisces	15:22	21:23	03:25	Telescope

TONIGHT'S VIEWING SCHEDULE

When & Where to Look Tonight

A simple guide to when each object is above your horizon. No astronomy chart reading required.

BEST TIMEHighest in your sky

The MoonNaked Eye · High in the sky

RISES15:07

BEST TIME21:17N · 79° high

SETS03:25

Reaches about 79° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Moderate Lunar Glow.

JupiterNaked Eye · High in the sky

RISES01:00

BEST TIME06:58N · 69° high

SETS12:53

Reaches about 69° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES15:52

BEST TIME21:53N · 82° high

SETS03:53

Reaches about 82° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:51

BEST TIME11:00S · 79° high

SETS17:10

Reaches about 79° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:28

BEST TIME06:23N · 65° high

SETS12:17

Reaches about 65° above the horizon at its highest point.Distinctive crimson hue; polar ice cap discernible near opposition.

OBSERVING LOG & TARGET LIST

Tonight's Prime Deep-Sky Targets

0 / 6 targets logged tonight

M31 / NGC 224 · Andromeda

Andromeda Galaxy

Spiral Galaxy (2.5M ly)

Our galactic neighbor; visible as a ghostly oval smudge with dense radiant stellar core.

M45 · Taurus

The Pleiades (Seven Sisters)

Open Star Cluster

Breathtaking blue diamond cluster enshrouded in delicate interstellar reflection nebulosity.

M42 / NGC 1976 · Orion

Great Orion Nebula

Diffuse Emission Nebula

Star nursery harboring the brilliant Trapezium cluster with sprawling bat-wing filaments.

NGC 869 & NGC 884 · Perseus

The Double Cluster

Twin Open Clusters

Pair of spectacular shimmering jewel-boxes bursting with ruby supergiant stars.

M13 / NGC 6205 · Hercules

Great Globular Cluster in Hercules

Globular Cluster (300k stars)

Massive beehive of ancient stars packed tightly together into a blazing central ball.

M57 / NGC 6720 · Lyra

The Ring Nebula

Planetary Nebula

Delicate glowing smoke-ring left behind by a dying star 2,500 light-years away.